. Jefferson, Berkeley, and Morgan counties, by Grimsley, assistant geologist. White, state geologist. of macadam roads subjected to light traffic. The following tests were made on the Upper Stones RiverLimestone from the quarries of the Standard Lime and StoneCompany, at Martinsburg: Specific gravity Weight per cubic foot (pounds) 168 168 168 Pounds of water absorbed per cubic Per cent, of wear French coefficient of wear Hardness Toughness 4 8 4 Cementing value 52 62 50 TESTS ON ROAD MATERIALS IN BERKELEY COUNT
. Jefferson, Berkeley, and Morgan counties, by Grimsley, assistant geologist. White, state geologist. of macadam roads subjected to light traffic. The following tests were made on the Upper Stones RiverLimestone from the quarries of the Standard Lime and StoneCompany, at Martinsburg: Specific gravity Weight per cubic foot (pounds) 168 168 168 Pounds of water absorbed per cubic Per cent, of wear French coefficient of wear Hardness Toughness 4 8 4 Cementing value 52 62 50 TESTS ON ROAD MATERIALS IN BERKELEY COUNTY, 1916. With the cooperation of the County Court of BerkeleyCounty rmd (heir Road Engineer, Mr. Geo. E. Showers, sam-ples of road materials were secured at a number of localitiesin Berkeley County in the spring of 1916. These sampleswere tester! by the U. S. Office of Public Roads at Washingtonwith the following results: Sandstones. A sample of the Oriskany Sandstone was taken on the ou1crop near the western base of Ferrel Ridge near Butts is composed of quartz sand with some riho-. WEST VIRGINIA GEOLOGICAL SURVEY. 577 clase feldspar and contains kaolin and limonite which frrmthe cement. It is therefore not a durable rock and has prac-tically no value as road material. The Bureau tests are given below: Butts North of Hedges-Store. Tomahawk, ville. Inwood. Specific gravity Weight per cubic foot (pounds) 140 156 165 144Pounds of water absorbed per cubic foot Per cent, of wear French coefficient of wear Hardness x Toughness -6 to-14 x -15 to-22 2 Cementing value Low Low Average Low The Oriskany Sandstone north of Tomahawk was alsosampled. It is also composed of fine angular quartz grainscemented together by limonite (iron oxide) and silica. It isa more durable rock than west of the ridge but is not suitablefor road material. It is an interesting outcrop in containingsome minute
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1916
